Answer:
It increase your ability to do activities like opening doors, lifting boxes or chopping wood without getting tired. Reduce the risk of injury. Help you keep a healthy body weight.
Explanation:
Vertebrates, and a few invertebrates, have a closed circulatory system. Closed circulatory systems have the blood closed at all times within vessels of different size and wall thickness. In this type of system, blood is pumped by a heart through vessels, and does not normally fill body cavities.
Answer:
False
Explanation:
False, the immunse system helps get rid of diseases.
Answer:
in a fight never through a first punch for leagle reasons like for example they are going to ask who started the fight all you have to say is that i didnt through a first punch but also never talk during a fight just beat him/her up and thats all dont stress is unless u started it .
Explanation:
Answer: E). Both b and d
Explanation:
Operant behaviour or conditioning which is also known as Instrumental conditioning is a type of learning process in which the strength of an organism or individuals behaviour is modified by punishment or reinforcement either positively or negatively.
Operant behavior is said to be "Voluntary" because the responses of the organism are under its control.
